如何保持ngbpopover处于打开状态，同时将其悬停在popover内容上？

<button type="button" ngbPopover="Popover Content" triggers="manual" #popover="ngbPopover">Hover me</button>

import { Component, ViewChild } from '@angular/core';
import { NgbPopover } from '@ng-bootstrap/ng-bootstrap';

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.css']
})
export class ExampleComponent {
  @ViewChild('popover') popover: NgbPopover;

  openPopover() {
    this.popover.open();
  }

  closePopover() {
    this.popover.close();
  }
}

<button type="button" (mouseenter)="openPopover()" (mouseleave)="closePopover()" ngbPopover="Popover Content" triggers="manual" #popover="ngbPopover">Hover me</button>
<div class="popover-content" *ngIf="popover.isOpen()">Popover Content</div>